Pontiac Firebird Top Speed: The Pontiac Firebird 400 - [1967] has a top speed of 120 mph (193.1 kph) Pontiac Firebird Acceleration: This Firebird accelerates 0-60mph (96.6 kph) in 6.2 seconds or 0-100kph in 6.4 and can achieve an estimated 1/4 mile drag time in 13.63 seconds with a trap speed of 100.4 mph.